Reviewed by the Clinical Team at London Andrology · Last reviewed: 2026
“Is 5 inch girth good?” is one of the most common questions men quietly search for. The short answer: yes — 5 inches of girth is above average. Here’s how penis girth sizes compare, what counts as average, and what you can do if you’d like more.
Girth means the circumference of the penis — the distance around the shaft — measured when erect. It’s different from length, and for many men it matters just as much.
What is the average penis girth?
Large measurement studies put average erect girth at roughly 11.5–12 cm, which is about 4.5–4.7 inches.¹ So a 5-inch girth sits comfortably above the average.
How penis girth sizes compare
- About 4.5 inches (11.4 cm): around average.
- 5 inches (12.7 cm): above average.
- 5.5 inches (14 cm): well above average.
- 6 inches (15.2 cm) and above: large — noticeably above average.
Remember these are guides, not targets. There is a wide, normal range, and where you sit on it says nothing about your health or your ability to have a satisfying sex life.
Is 6 inch girth big?
Yes — a 6-inch (15.2 cm) girth is well above average. Comfort and lubrication matter more than chasing a number, and a partner’s experience depends on far more than girth alone.
How to measure your girth accurately
Girth is easy to over- or under-estimate depending on how you measure. Wrap a flexible tape (or a piece of string) around the thickest part of the shaft while fully erect. For the full method, see how to measure your penis correctly.
What if I’d like more girth?
If added girth would boost your confidence, there are two established medical options: hyaluronic acid (HA) dermal fillers (a non-surgical, temporary increase) and autologous fat transfer (a surgical, longer-lasting result). Both are explained in our guide to filler, fat and permanent girth enhancement, and results vary between individuals.
Frequently asked questions
Is 5 inch girth good?
Yes — 5 inches (about 12.7 cm) is above the average erect girth of roughly 11.5–12 cm.
Is 5 inch girth big?
It’s comfortably above average. 5.5–6 inches would be well above average.
What is the average penis girth?
Around 11.5–12 cm (about 4.5–4.7 inches) when erect, based on large measurement studies.
Can I increase my girth?
Yes — hyaluronic acid fillers give a temporary increase and fat transfer a longer-lasting one. Book a free phone call, or message us on WhatsApp at +44 7457 404374, to discuss what suits you.
References
- Veale D, et al. Am I normal? A systematic review and construction of nomograms for penile dimensions. BJU Int. 2015;115(6):978–986.
This article is for educational purposes only and does not constitute personal medical advice. All treatment decisions should follow consultation with a qualified professional.
